Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a média de vitórias, quando Pontos são inferiores a "19"?
 ###Tabelas: CREATE TABLE list_of_ghanaian_foreign_ministers (list_of_ghanaian_foreign_ministers_id AUTO_INCREMENT PRIMARY KEY, Number INT, Minister VARCHAR, Took office VARCHAR, Left office VARCHAR, Government VARCHAR, Party VARCHAR) CREATE TABLE house_of_valois-burgundy_1405–1482 (house_of_valois-burgundy_1405–1482_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Date of birth VARCHAR, Date of death VARCHAR, Reign VARCHAR, Relationship with predecessor VARCHAR) CREATE TABLE pga_tour_wins_5 (pga_tour_wins_5_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Tournament VARCHAR, Winning score VARCHAR, Margin of victory VARCHAR, Runner(s)-up VARCHAR) CREATE TABLE group_ii (group_ii_id AUTO_INCREMENT PRIMARY KEY, Position INT, Played INT, Points INT, Wins INT, Draws INT, Losses INT, Goals for INT, Goals against INT, Goal Difference INT) CREATE TABLE scholarly_journals (scholarly_journals_id AUTO_INCREMENT PRIMARY KEY, ISSN VARCHAR, Language VARCHAR, Country VARCHAR, Frequency VARCHAR, Publication range VARCHAR, Status VARCHAR, Document Type VARCHAR)  
SELECT AVG Wins FROM group_ii WHERE Points < 19